Malicious PDF — malware analysis report

Static analysis result for SHA-256 76531e481b679223…

MALICIOUS

PDF

87.4 KB Created: 2021-03-16 18:30:41 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-07
MD5: 0aa2861a274f96b59c27f9a849426d2c SHA-1: 1066bbe080044c14de0ec14f50c09e0d62f12bd8 SHA-256: 76531e481b6792239f42c52190aad061d2052d5667a229315002213c980dcbbe
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file was flagged as malicious by a machine learning classifier and ClamAV, indicating a high likelihood of malicious intent. It contains an embedded URL pointing to a suspicious domain, likely intended for phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and embedded URI suggest it's designed to trick users into visiting a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9989

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://kuzutuzo.ru/strik?utm_term=z97+cpu+compatibility PDF link annotation
    • http://vorasim.iblogger.org/bakery_business_plan_sample.pdfIn PDF document text
    • https://cdn.sqhk.co/nuroteditu/gHjhgjd/devil_ninja_2_cave_mod_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/fusuwudofal/gfnhahc/purat.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4403806/normal_5fdf9a5aad92b.pdfIn PDF document text
    • https://cdn.sqhk.co/lomasamube/fBM4hbh/brain_test_2_prison_escape_level_17_answer.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4410702/normal_600bca48dcd0a.pdfIn PDF document text
    • https://cdn.sqhk.co/vujaderaz/f95hdBC/48020231311.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368772/normal_6022b0ee3cd38.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4494661/normal_604ca821df670.pdfIn PDF document text
    • https://cdn.sqhk.co/mebereserab/daT2ljb/gemonuzanugevewufabava.pdfIn PDF document text
    • http://gewewenaso.iblogger.org/which_batman_comic_should_i_read_first.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/fakuguvil/38060899388.pdfIn PDF document text
    • http://gapowap.epizy.com/terew.pdfIn PDF document text
    • https://s3.amazonaws.com/jokotaziweluge/kia_cerato_2011_service_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/vaxebisapesi/how_often_dpf_regen.pdfIn PDF document text
    • https://s3.amazonaws.com/tirimofufemukat/tipos_de_autolesiones.pdfIn PDF document text
    • https://010f2e21-25ca-4560-806d-08cbbb7c7db1.filesusr.com/ugd/74a852_1859e216149642039537c57963b4dc6c.pdf?index=trueIn PDF document text
    • https://c9b0c9dc-51ad-46ec-84b2-dbc26df53712.filesusr.com/ugd/b6f588_535305ceaace4f54bff2812999c83a6e.pdf?index=trueIn PDF document text
    • http://jipaxesu.rf.gd/fixing_a_hole_in_sheetrock.pdfIn PDF document text
    • https://s3.amazonaws.com/wixamupelinere/18188064018.pdfIn PDF document text
    • https://19d52a5f-8b21-4d9b-a6ae-3a87d75a5bf4.filesusr.com/ugd/9b7d8a_1c946dc2da2c41dab9ec29eae11877b0.pdf?index=trueIn PDF document text
    • https://02408c19-b9f6-4996-a596-1d5b7e46c8d3.filesusr.com/ugd/c83fdb_f49d5e3830c246af8fcbc76312b6186f.pdf?index=trueIn PDF document text
    • https://ff0b3df2-dc61-4aeb-9024-93fa9b5bc175.filesusr.com/ugd/aa14a9_0e92cf62e6494726a58e4d635289ea0a.pdf?index=trueIn PDF document text
    • http://xivoxek.epizy.com/lyman_micro-touch_1500_electronic_reloading_scale_review.pdfIn PDF document text
    • https://952d9f4b-853a-4e85-af28-23c4d489d487.filesusr.com/ugd/8db125_8da877d9d6f643f7a35236b05b96b2af.pdf?index=trueIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010a2b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10A2B 3016 bytes
SHA-256: 6b1886100909a5777bb30fc7b7be00bba8ed48ad5f5b392b7a0cb4783a0739ac
font_01_sfnt_off000114e5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x114E5 5240 bytes
SHA-256: 7072e198b6f8372e86e99cfd22233d7af573db5b384ed6eedfd80185e4215c5b
font_02_sfnt_off000126be.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x126BE 12060 bytes
SHA-256: 162e794fb571883cc1c1a4bbd50553b87dbdc621f1e2a78264b9ec56d9dafc86

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